Authors:
Liu, T., Saito, H., Oi, M., & Pelowski, M.
Title:
Appraisal of a copresent observer as supportive activates the left
inferior parietal lobule: A near-infrared spectroscopy study using a
driving video game
Journal:
NeuroReport
doi:
10.1097/WNR.0b013e328357bb3b
論文URL:
http://journals.lww.com/neuroreport/Abstract/2012/10030/
Appraisal_of_a_copresent_observer_as_supportive.6.aspx
Abstract:
The role of the presence of others in a social context has been debated
widely. Although the importance of mutual cognitive functions between
performer and observer is generally accepted, little is known about the
neural correlates of paired performers and observers themselves. In this
near-infrared spectroscopy (NIRS) study we measured the activation in
the bilateral inferior parietal lobule (IPL) when driver-observer pairs
of participants performed a driving video game task. The performer's
task was to drive from start to goal using a default route map, while
their partner observed the performance. According to the performer's
subjective appraisal of the copresent observer obtained after the
driving task, the pairs were divided into three groups: supportive,
nonsupportive, and neutral. The driving time, error, and tension score
did not show significant differences between the three groups. However,
NIRS data of performers in the supportive group showed significantly
higher activation in the left IPL than those in the nonsupportive group,
but not in the right IPL. NIRS data of observers in the concerned two
groups did not show significant differences bilaterally in IPL. These
results suggest that the left IPL distinctively responds according to a
performer's cognitive appraisal of a copresent observer.
日本語によるコメント（オプション，200-300字で）:
近赤外分光法(NIRS)を用いて，運転ゲーム中の運転者役とその観察者の両側の
IPLでの賦活を計測した．運転遂行者の課題は所定経路図の運転であり，観察者
の課題はその遂行の観察であった．遂行者による観察者に対する主観的評価に
従って，実験参加者のペアは，3群に分割された: 支援，非支援，中立群。遂行
者の運転時間，誤反応数，緊張評価得点は，3群間で有意差を示さなかった。し
かし，NIRSデータは，観察者を支援的と評価した課題遂行者（支援群）の左IPL
でのみ，非支援群よりも有意に高い賦活を示した。これらの結果は，同席する観
察者への遂行者の「主観的な」評価に応じて，遂行者の左IPL反応が異なること
を示唆する。
著者Contact先の email:
saito@is.nagoya-u.ac.jp
